Analysis
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max time kernel
150s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 21:23
Static task
static1
Behavioral task
behavioral1
Sample
8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe
Resource
win7-20240508-en
General
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Target
8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe
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Size
4.1MB
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MD5
25de89bbcf1b6b2399eed745d966e8f0
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SHA1
9593b6a78f2769b83cc949afd0482b4b29f0d9e7
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SHA256
8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc
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SHA512
011c1785b918ef8f8091da67a8d37708df8103aa6da188f5a8c6b7cea3400e2c8012c3b2a7ec77adc1ab19aeb0c81554243fc424eabe1e815c327a0bf4147120
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SSDEEP
98304:wc7aFVXn+Lid2bryXaMbaClZg093y0sFFfdliBdP4:wX++d2b0aMbplZO0sFfS4
Malware Config
Signatures
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Glupteba payload 19 IoCs
Processes:
resource yara_rule behavioral2/memory/4548-2-0x0000000004960000-0x000000000524B000-memory.dmp family_glupteba behavioral2/memory/4548-3-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/4548-91-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/4548-126-0x0000000004960000-0x000000000524B000-memory.dmp family_glupteba behavioral2/memory/3640-131-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/4548-195-0x0000000000400000-0x0000000000D1C000-memory.dmp family_glupteba behavioral2/memory/3156-208-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-215-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-217-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-219-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-221-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-223-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-225-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-227-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-229-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-231-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-233-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-235-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba behavioral2/memory/3156-237-0x0000000000400000-0x0000000002738000-memory.dmp family_glupteba -
Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid Process 4480 netsh.exe -
Executes dropped EXE 2 IoCs
Processes:
csrss.exeinjector.exepid Process 3156 csrss.exe 3924 injector.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
csrss.exe8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
Processes:
csrss.exedescription ioc Process File opened for modification \??\WinMonFS csrss.exe -
Drops file in System32 directory 7 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive powershell.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
Processes:
8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exedescription ioc Process File opened (read-only) \??\VBoxMiniRdrDN 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe -
Drops file in Windows directory 2 IoCs
Processes:
8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exedescription ioc Process File opened for modification C:\Windows\rss 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe File created C:\Windows\rss\csrss.exe 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe -
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid Process 4944 powershell.exe 2788 powershell.exe 1232 powershell.exe 880 powershell.exe 736 powershell.exe 1632 powershell.exe 2704 powershell.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid Process 4764 schtasks.exe 1640 schtasks.exe -
Modifies data under HKEY_USERS 64 IoCs
Processes:
8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time" 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exe8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exepowershell.exe8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeinjector.execsrss.exepid Process 1632 powershell.exe 1632 powershell.exe 4548 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 4548 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 2704 powershell.exe 2704 powershell.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 4944 powershell.exe 4944 powershell.exe 4944 powershell.exe 2788 powershell.exe 2788 powershell.exe 2788 powershell.exe 1232 powershell.exe 1232 powershell.exe 880 powershell.exe 880 powershell.exe 736 powershell.exe 736 powershell.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3156 csrss.exe 3156 csrss.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3156 csrss.exe 3156 csrss.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe 3924 injector.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
powershell.exe8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execsrss.exedescription pid Process Token: SeDebugPrivilege 1632 powershell.exe Token: SeDebugPrivilege 4548 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Token: SeImpersonatePrivilege 4548 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe Token: SeDebugPrivilege 2704 powershell.exe Token: SeDebugPrivilege 4944 powershell.exe Token: SeDebugPrivilege 2788 powershell.exe Token: SeDebugPrivilege 1232 powershell.exe Token: SeDebugPrivilege 880 powershell.exe Token: SeDebugPrivilege 736 powershell.exe Token: SeSystemEnvironmentPrivilege 3156 csrss.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.execmd.execsrss.exedescription pid Process procid_target PID 4548 wrote to memory of 1632 4548 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 84 PID 4548 wrote to memory of 1632 4548 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 84 PID 4548 wrote to memory of 1632 4548 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 84 PID 3640 wrote to memory of 2704 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 95 PID 3640 wrote to memory of 2704 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 95 PID 3640 wrote to memory of 2704 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 95 PID 3640 wrote to memory of 3512 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 99 PID 3640 wrote to memory of 3512 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 99 PID 3512 wrote to memory of 4480 3512 cmd.exe 101 PID 3512 wrote to memory of 4480 3512 cmd.exe 101 PID 3640 wrote to memory of 4944 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 102 PID 3640 wrote to memory of 4944 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 102 PID 3640 wrote to memory of 4944 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 102 PID 3640 wrote to memory of 2788 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 105 PID 3640 wrote to memory of 2788 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 105 PID 3640 wrote to memory of 2788 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 105 PID 3640 wrote to memory of 3156 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 108 PID 3640 wrote to memory of 3156 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 108 PID 3640 wrote to memory of 3156 3640 8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe 108 PID 3156 wrote to memory of 1232 3156 csrss.exe 109 PID 3156 wrote to memory of 1232 3156 csrss.exe 109 PID 3156 wrote to memory of 1232 3156 csrss.exe 109 PID 3156 wrote to memory of 880 3156 csrss.exe 115 PID 3156 wrote to memory of 880 3156 csrss.exe 115 PID 3156 wrote to memory of 880 3156 csrss.exe 115 PID 3156 wrote to memory of 736 3156 csrss.exe 117 PID 3156 wrote to memory of 736 3156 csrss.exe 117 PID 3156 wrote to memory of 736 3156 csrss.exe 117 PID 3156 wrote to memory of 3924 3156 csrss.exe 119 PID 3156 wrote to memory of 3924 3156 csrss.exe 119 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe"C:\Users\Admin\AppData\Local\Temp\8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4548 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1632
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C:\Users\Admin\AppData\Local\Temp\8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe"C:\Users\Admin\AppData\Local\Temp\8cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc.exe"2⤵
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3640 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2704
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C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
PID:3512 -
C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
PID:4480
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4944
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2788
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3156 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1232
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:4764
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:636
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:880
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Command and Scripting Interpreter: PowerShell
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:736
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3924
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
PID:1640
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
281KB
MD5d98e33b66343e7c96158444127a117f6
SHA1bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA2565de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
SHA512705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD512135380f6ff6b43f3469629e800e8c8
SHA1578ca38018081ea7a53a46ef3fa9a0a718a7545e
SHA256e4149b689f0a88a5a2d304af0f99d8eed0a13dbac27c6aef40fbaa65b0485f2f
SHA5122e8816b824a250e9a30ca12ba06e77ae900b865fa6789d090c1e9753daa983ef32835f09cc7aea555c87decb2c311620f2d27410090ddaf6e1f28292d346cf1f
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5955e36f58e0edc7369a94d0730ac9cc9
SHA1e3b8e8845f9946d71a853f2cf517a0d28ad550db
SHA25626bbc17013e770eb10bb76a131dad405ec48b69bd57d5e3c82ded7646045f7ab
SHA5122dd1be557a288463e975d701d7e303d75e9f03cc384d5360757dbc6a6520eabf9fade07c6f3f550cfd02eac96896ee3150cb678e6f71372d0cb9724da0c84ad0
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5a348b5e37851df748eca9624771597c3
SHA10ada668ecf6261cfaa97f9e5cf129a791d4be945
SHA256f307b1666587988e0dfb412d23103ea24acc38235c0fb97526da6632dd87df74
SHA5126f67e9e02915c87978551d81f536ce22f4af3c6ab6edc8e8cc8c2d08d47501aba807dad01f8ba15d36ead236237fdd1db7512e4dd56e35cb8f903731587b831c
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD5e53334d2f2dac19467fc00f7bae6b092
SHA1e943929cec970f0e7c88bfc3e6160646b816b550
SHA25680827b5f0e565e309850f215cb9f121ed8866523d10cd5555fa2bb0ce97a265a
SHA5123b58863321b6c8d21228c5febce9b3fbea34a4304b78d40b0d6b0f33b24a2d0dcd557aeaffb52f18db272ab02545b57333b4cc53d445c4b1fbf6413eb6fee4f2
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C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Filesize19KB
MD56f21b43e625d8fac361b5fdc8fdd9a7a
SHA14b648ba65db906b94cc2b23db45fd80e9b283cfc
SHA2562961d9a7e8d3804c613b76b9b8b7b911021b965f10c9cfa6d684f83ca4b4b183
SHA5123a29e9b5c14c4f4b2d8148ac00df093fb290d69fcddf779a2517db6059ba88df6821dc8afb39643218c3329517a4fc6c29f37217df723b9b2f6752720d298a8b
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Filesize
4.1MB
MD525de89bbcf1b6b2399eed745d966e8f0
SHA19593b6a78f2769b83cc949afd0482b4b29f0d9e7
SHA2568cca34499207c9b0f3d710c4c0c5bd0c6a934003cd18754727274f2629ed62dc
SHA512011c1785b918ef8f8091da67a8d37708df8103aa6da188f5a8c6b7cea3400e2c8012c3b2a7ec77adc1ab19aeb0c81554243fc424eabe1e815c327a0bf4147120